CN103150539A - Bar-code scanner and bar-code scanning method thereof - Google Patents
Bar-code scanner and bar-code scanning method thereof Download PDFInfo
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- CN103150539A CN103150539A CN2013100846985A CN201310084698A CN103150539A CN 103150539 A CN103150539 A CN 103150539A CN 2013100846985 A CN2013100846985 A CN 2013100846985A CN 201310084698 A CN201310084698 A CN 201310084698A CN 103150539 A CN103150539 A CN 103150539A
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Abstract
The invention provides a bar-code scanner which comprises a casing, a trigger, a main board, a bar-code scanning module and a photosensitive device, wherein the main board is arranged in a casing and is provided with a central processing chip; the bar-code scanner further comprises an infrared ranging module for detecting the distance of a bar code and a field depth indicating device; the infrared ranging module comprises a transmitter for transmitting infrared rays and a receiver for receiving the infrared rays transmitted by the bar code; the field depth indicating device is connected with the main board; and main program of the central processing chip operates to obtain the direction and the distance required to move by the bar-code scanner and transmitting an indication signal to the field depth indicating device for driving the field depth indicating device to prompt. The invention also provides a bar-code scanning method which comprises a ranging and operating step, a field depth prompting step, a position adjusting step and a decoding step. Compared with the prior art, the bar-code scanner and the bar-code scanning method disclosed by the invention have the characteristics that higher simplicity and convenience for operation by users are realized and the scanning efficiency of the bar code is greatly increased.
Description
Technical field
The present invention relates to a kind of bar code scanner, especially relate to a kind of barcode scanner and bar code scanning method thereof of realizing depth of field prompting based on the infrared distance measurement technology.
Background technology
Barcode scanner is called again bar-code reader, bar code scan rifle, bar code scanner, barcode scanner and bar code reader.It is for the arrangement for reading of bar code reading institute inclusion information, utilizes optical principle, being transferred to computer or other equipment by data line or wireless mode after the content decoding of bar code.Barcode scanner is widely used in the demand in a plurality of fields such as business POS POS, express delivery, storage, logistics, books, medicine.
Any reading code equipment has specific coverage and the depth of field (DOF, depth of field) that is fit to bar code reading, and reading code equipment can successful bar code reading in field depth.Yet the depth of field of not all reading code equipment is all the same, even if for the same bar code.Because barcode scanning equipment is used in the different occasions that need, different focusing is arranged, therefore the same-type reading code equipment of different company, or the different reading code equipment of same company, or same equipment is when reading different bar code, their depth of field is different, and difference is very large sometimes.A lot of users do not understand this type of reading code equipment, usually encounter the phenomenon (very common in the supermarket POS is used) that repeatedly trial still can not read when reading code.In fact most of the time, bar code all can be read, but barcode scanner need to locate in place, make the bar code can successful bar code reading in the coverage of barcode scanner and field depth.
Yet, use the barcode scanner scanning barcode of prior art, when can't bar code reading, whether barcode scanner can not point out distance between barcode scanner and bar code in coverage and field depth, and the user does not know this, and how the Mobile barcode scanner is with successful bar code reading.In this case, the user can only be by repeatedly attempting, with barcode scanner near or scan away from bar code, therefore operation trouble very, the bar code reading efficiency is lower.
Summary of the invention
In order to address the above problem, a kind ofly can calculate the distance of bar code and the barcode scanner of the successful bar code reading of prompting and guiding user Mobile barcode scanner thereby the purpose of this invention is to provide, to simplify the bar code scan operation steps, promote the bar code scan efficiency.
In order to achieve the above object, the invention provides a kind of barcode scanner, it comprises housing, trigger, is located at the mainboard with central processing element in housing, and the bar code scan module and the sensor devices that are connected with mainboard, it is characterized in that, described barcode scanner also comprises:
The infrared distance measurement module, it is connected with described mainboard with described trigger, to detect bar code and the master routine that detection signal is transferred to central processing element is calculated bar code distance and bar code size, described infrared distance measurement module comprises be used to sending ultrared transmitter and being used for receiving the ultrared receptacle that bar code fires back;
Depth of field indicating device, it is connected with described mainboard, and the master routine computing of central processing element draws direction and the distance that barcode scanner need to move and indicator signal is transferred to depth of field indicating device, drives the prompting of depth of field indicating device.
During barcode scanner energising standby, when triggering trigger, the user starts system, the transmitter of infrared distance measurement module will be launched infrared signal, simultaneously the master routine of central processing element begins to start object algorithm thread, and the infrared signal that returns according to the receptacle of infrared distance measurement module is ceaselessly according to the distance of algorithm bar code and the concrete scope and size of bar code.
Preferably, described bar code scan module is laser module or the camera module with lighting source.
Preferably, described depth of field indicating device is pilot lamp or hummer or both all has.
After completing range finding, the master routine of central processing element can be according to the initial parameter comparison of default bar code, the sub-picture that the while sensor devices also can take bar code carries out Calculation Comparison degree or MTF numerical value, draw moving direction and the distance of suggestion by computing, and indicator signal is transferred to depth of field indicating device, drive depth of field indicating device and carry out depth of field prompting, the change color by pilot lamp for example, or the frequency of flicker, or the audible frequency of hummer, or specific music, or the variation of illumination light, or above combination uses to instruct the final user to operate.The user is under the prompting and guiding of barcode scanner, and the Mobile barcode scanner is bar code reading and decoding fast.
The present invention also provides a kind of bar code scanning method, it is characterized in that, comprises the following steps:
Range finding and calculation step: after triggering trigger startup system, the transmitter of infrared distance measurement module sends range-measurement infrared, receptacle receives the range-measurement infrared of bar code reflection, then the master routine by central processing element ceaselessly calculates the actual range of bar code and the size of bar code, the sensor devices of scanner catches image calculation contrast or the mtf value of bar code simultaneously, and central processing element draws by the algorithm computing direction and the distance that barcode scanner need to move;
Depth of field prompting step: the direction that central processing element need to move barcode scanner and the operation result of distance send depth of field indicating device to by electronic signal, drive the depth of field indicating device user is carried out depth of field prompting, thus the direction that prompting user distance and barcode scanner need to move;
The position set-up procedure: the user is mobile according to depth of field prompting adjust barcode scanner direction and and bar code between distance;
Decoding step: after the distance of bar code enters the coverage and field depth of barcode scanner, bar code scan module bar code reading and decoding.
Preferably, described range finding and calculation step also comprise: the image calculation mtf value that the central processing element utilization catches judges whether the bar code exposure is suitable.
Preferably, in described depth of field prompting step, in described depth of field prompting step, the mode of depth of field prompting is pointed out user distance and needs mobile direction for the mode of pointing out by hummer and/or LED light is pointed out.Further, the mode of described hummer prompting is utilize the different frequency sound of hummer or pipe continuously or play specific music and point out user distance and need mobile direction.Further, the mode of described LED light prompting is to utilize the different flashing mode of LED light or different colors to show to point out user distance and the mobile direction of needs.
Preferably, described decoding step also comprises: the bar code actual range that utilizes the master routine of central processing element to calculate, the focal position adjustment that triggers automatic focus-adjusting lens realizes decoding.
Compared to prior art, barcode scanner provided by the invention and bar code scanning method are realized depth of field prompting based on the infrared distance measurement technology, are very easy to the operation of scanning input bar code, have promoted bar code scan efficient.
Description of drawings
Fig. 1 is the structure perspective diagram of barcode scanner of the present invention.
Fig. 2 is the workflow block scheme of barcode scanner of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
See also Fig. 1, the invention provides a kind of barcode scanner, it comprises housing 1, trigger 2, is located at the mainboard with central processing element 9 in housing, and the bar code scan module 6 that is connected with mainboard 9 and sensor devices 11, described barcode scanner also comprises button 3, windowpane 4, infrared distance measurement module 5, comprise the depth of field indicating device of LED light 7 and hummer 8 and be located at data and power interface 10 on mainboard 1.In the present embodiment, bar code scan module 6 can or have the camera module of lighting source for the mode of laser group.
Described infrared distance measurement module 5 is connected with described mainboard with described trigger, to detect bar code and the master routine that detection signal is transferred to central processing element is calculated bar code distance and bar code size, described infrared distance measurement module comprises be used to sending ultrared transmitter and being used for receiving the ultrared receptacle that bar code fires back.
Described pilot lamp 7 is connected with described mainboard with hummer 8, and the master routine computing of central processing element draws direction and the distance that barcode scanner need to move and indicator signal is transferred to pilot lamp 7 and hummer 8, drives pilot lamp 7 and hummer 8 promptings.
See also Fig. 2, the barcode scanner of employing the present embodiment carries out the bar code scanning method of bar code scan, specifically comprises the following steps:
The startup system: under barcode scanner energising holding state, trigger trigger 2, press the button 3 under the effect of trigger 2, system starts, and bar code scan module 5 and infrared distance measurement module 5 are started working simultaneously.When bar code scan module 5 is the laser module, after system starts, laser module lase.When bar code scan module 5 when having the camera module of mains lighting supply, after system starts with the emissive lighting light source.
Range finding and calculation step: after triggering trigger 2 startup systems, the transmitter of infrared distance measurement module 5 sends range-measurement infrared, receptacle receives the range-measurement infrared of bar code reflection, then the master routine by central processing element ceaselessly calculates the actual range of bar code and the size of bar code, the sensor devices 11 of scanner catches image calculation contrast or the mtf value of bar code simultaneously, and central processing element draws by the algorithm computing direction and the distance that barcode scanner need to move.When bar code scan module 5 is when having the camera module of lighting source, judge by calculating mtf value whether the bar code exposure is suitable simultaneously.
Depth of field prompting step: the direction that central processing element need to move barcode scanner and the operation result of distance send LED light 7 and hummer 8 to by electronic signal, 8 couples of users of driving LED pilot lamp 7 and hummer carry out depth of field prompting, thus the direction that prompting user distance and barcode scanner need to move.
The mode of depth of field prompting is specially by the mode of hummer 8 promptings and/or LED light 7 promptings and points out user distance and need mobile direction.Further, the mode of described hummer 8 promptings is utilize the different frequency sound of hummer 8 or pipe continuously or play specific music and point out user distance and need mobile direction.Further, the mode of described LED light 7 promptings is to utilize the different flashing mode of LED light 7 or different colors to show to point out user distance and the mobile direction of needs.
The position set-up procedure: the user is mobile according to depth of field prompting adjust barcode scanner direction and and bar code between distance.
Decoding step: after the distance of bar code enters the coverage and field depth of barcode scanner, bar code scan module bar code reading and decoding.When the bar code scan module has automatic focus-adjusting lens, the bar code actual range that utilizes the master routine of central processing element to calculate, the focal position adjustment that triggers automatic focus-adjusting lens realizes decoding.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow person skilled in the art scholar can understand content of the present invention and implement according to this; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (9)
1. barcode scanner, it comprises housing, trigger, is located at the mainboard with central processing element in housing, and the bar code scan module and the sensor devices that are connected with mainboard, it is characterized in that, and described barcode scanner also comprises:
The infrared distance measurement module, it is connected with described mainboard with described trigger, to detect bar code and the master routine that detection signal is transferred to central processing element is calculated bar code distance and bar code size, described infrared distance measurement module comprises be used to sending ultrared transmitter and being used for receiving the ultrared receptacle that bar code fires back;
Depth of field indicating device, it is connected with described mainboard, and the master routine computing of central processing element draws direction and the distance that barcode scanner need to move and indicator signal is transferred to depth of field indicating device, drives the prompting of depth of field indicating device.
2. a kind of barcode scanner according to claim 1, it is characterized in that: described bar code scan module is laser module or the camera module with lighting source.
3. a kind of barcode scanner according to claim 1, it is characterized in that: described depth of field indicating device is pilot lamp or hummer or both all has.
4. a bar code scanning method, is characterized in that, comprises the following steps:
Range finding and calculation step: after triggering trigger startup system, the transmitter of infrared distance measurement module sends range-measurement infrared, receptacle receives the range-measurement infrared of bar code reflection, then the master routine by central processing element ceaselessly calculates the actual range of bar code and the size of bar code, the sensor devices of scanner catches image calculation contrast or the mtf value of bar code simultaneously, and central processing element draws by the algorithm computing direction and the distance that barcode scanner need to move;
Depth of field prompting step: the direction that central processing element need to move barcode scanner and the operation result of distance send depth of field indicating device to by electronic signal, drive the depth of field indicating device user is carried out depth of field prompting, thus the direction that prompting user distance and barcode scanner need to move;
The position set-up procedure: the user is mobile according to depth of field prompting adjust barcode scanner direction and and bar code between distance;
Decoding step: after the distance of bar code enters the coverage and field depth of barcode scanner, bar code scan module bar code reading and decoding.
5. a kind of bar code scanning method according to claim 4, is characterized in that, described range finding and calculation step also comprise: the image calculation mtf value that the central processing element utilization catches judges whether the bar code exposure is suitable.
6. a kind of bar code scanning method according to claim 4, is characterized in that, in described depth of field prompting step, the mode of depth of field prompting is pointed out user distance and needs mobile direction for the mode of pointing out by hummer and/or LED light is pointed out.
7. a kind of bar code scanning method according to claim 6, is characterized in that, the mode of described hummer prompting is utilize the different frequency sound of hummer or pipe continuously or play specific music and point out user distance and need mobile direction.
8. a kind of bar code scanning method according to claim 6, is characterized in that, the mode of described LED light prompting is to utilize the different flashing mode of LED light or different colors to show to point out user distance and the mobile direction of needs.
9. a kind of bar code scanning method according to claim 4, is characterized in that, described decoding step: also comprise: the bar code actual range that utilizes the master routine of central processing element to calculate, the focal position adjustment that triggers automatic focus-adjusting lens realizes decoding.
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| CN103699866A (en) * | 2013-11-21 | 2014-04-02 | 苏州斯普锐智能系统有限公司 | Scanning equipment with product position feedback function |
| CN104239834A (en) * | 2013-06-24 | 2014-12-24 | 万信科技系统有限公司 | Radio frequency identification reader system and control method thereof |
| CN104484642A (en) * | 2015-01-06 | 2015-04-01 | 王启云 | Hand-held bar-code scanner |
| CN105187719A (en) * | 2015-08-21 | 2015-12-23 | 深圳市金立通信设备有限公司 | Shooting method and terminal |
| CN105469092A (en) * | 2015-12-04 | 2016-04-06 | 苏州佳世达光电有限公司 | Scanning assistance positioning system, bar code scanning device, and scanning assistance positioning method |
| CN106067050A (en) * | 2016-08-05 | 2016-11-02 | 河南师范大学 | A kind of books positioning identification system based on photoelectric communication |
| CN106682558A (en) * | 2017-03-02 | 2017-05-17 | 苏州摩比力特电子科技有限公司 | Laser range finding type barcode scanning device and method |
| CN107451499A (en) * | 2016-06-01 | 2017-12-08 | 曾平桂 | Bar code scanning method and device |
| CN107451500A (en) * | 2016-06-01 | 2017-12-08 | 曾平桂 | Bar code scanning method and system |
| CN108021841A (en) * | 2017-12-19 | 2018-05-11 | 苏州吉赛电子科技有限公司 | A kind of automatic hand-free code reader |
| CN108021834A (en) * | 2016-10-31 | 2018-05-11 | Ncr公司 | Variable depth of field scanning means and method |
| CN108090387A (en) * | 2018-01-02 | 2018-05-29 | 东莞市鼎锋智能电子科技有限公司 | A kind of barcode scanning gun with cash register system |
| CN108304741A (en) * | 2017-01-12 | 2018-07-20 | 手持产品公司 | Wake-up system in bar code scanner |
| CN109388986A (en) * | 2017-08-10 | 2019-02-26 | 卡西欧计算机株式会社 | Bar code reading device, control method and computer-readable storage medium |
| CN109740392A (en) * | 2018-12-03 | 2019-05-10 | 深圳盈达信息科技有限公司 | Scanning means and its scanning engine |
| CN109934034A (en) * | 2019-02-22 | 2019-06-25 | 无锡盈达聚力科技有限公司 | A kind of scanning means and barcode scanning method of Parameter adjustable |
| CN110309682A (en) * | 2019-07-08 | 2019-10-08 | 环鸿电子（昆山）有限公司 | Test method for scanner |
| CN111428528A (en) * | 2020-03-26 | 2020-07-17 | 上海艾舜杰信息科技有限公司 | Bar code reading device and reading method thereof |
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| CN108304741A (en) * | 2017-01-12 | 2018-07-20 | 手持产品公司 | Wake-up system in bar code scanner |
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| CN109388986A (en) * | 2017-08-10 | 2019-02-26 | 卡西欧计算机株式会社 | Bar code reading device, control method and computer-readable storage medium |
| CN109388986B (en) * | 2017-08-10 | 2021-11-26 | 卡西欧计算机株式会社 | Bar code reading device, control method and computer readable storage medium |
| CN108021841A (en) * | 2017-12-19 | 2018-05-11 | 苏州吉赛电子科技有限公司 | A kind of automatic hand-free code reader |
| CN108090387A (en) * | 2018-01-02 | 2018-05-29 | 东莞市鼎锋智能电子科技有限公司 | A kind of barcode scanning gun with cash register system |
| CN109740392A (en) * | 2018-12-03 | 2019-05-10 | 深圳盈达信息科技有限公司 | Scanning means and its scanning engine |
| CN109934034A (en) * | 2019-02-22 | 2019-06-25 | 无锡盈达聚力科技有限公司 | A kind of scanning means and barcode scanning method of Parameter adjustable |
| CN110309682A (en) * | 2019-07-08 | 2019-10-08 | 环鸿电子（昆山）有限公司 | Test method for scanner |
| CN111428528A (en) * | 2020-03-26 | 2020-07-17 | 上海艾舜杰信息科技有限公司 | Bar code reading device and reading method thereof |
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